Place the cursor on a table control

What causes this issue?

You chose <LS>Edit -> Table control</>, but a screen element of a
different type already exists at the current cursor position.

System Response

Function not executed.

How to fix this error?

If you want to create a table control, place the cursor on a free space
on the screen and choose either <LS>Edit -> Table control</> or
<LS>Edit -> Create element -> Table control</>.
If you want to edit or display a table control, place the cursor on the
table control and choose <LS>Edit -> Table control</>.

Error message extract from SAP system. Copyright SAP SE.